At the very beginning of Animal Farm, it is easy to laugh at Squealer’s professed ability to "turn black into white" (2.2). Yet as time goes on, it becomes clear that Squealer’s cleverness can be used in very harmful ways. The pigs take advantage of the other animals’ lack of intelligence, and gradually brainwash, deceive, distract, and dupe them into a life of hardship and toil as short and miserable as their life before the Rebellion.
Of all the tools the pigs have with which to oppress the other animals, their own intellect is their greatest means of control.
The hierarchy of intelligence in the animals on the farm ultimately becomes the hierarchy of power – except for Snowball, who is ousted by violence. Orwell shows that, in the end, brute force is more important than intellect.